Jacquard mechanism for looms.



. Y Patented Sept. 3, I90]. w. PATON. JA'CQUABDMEGHANISM FOB-LOOKS.

5 (Application filed Dec. 17, 1900.) (No Model.) '2 Shuts- Sheet I.

No. as2,||5. Patented Sept. 3, 1901."

w. PATUNi JAGIIUA'R'D MECHANISM FOR LUOMS.

(Application filed Dec. 17, 1900.)

2 Sheets-Sheet 2.-

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' UNITED STATES,

PATENT CFFICE.

WVALTER PATON, OF OARLISLE, ENGLAND.

JACQUARD MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 682,11 5, dated September 3, 1901.

Application filed December 1'7, 1900. Serial No. 40,089. (No model.)

To all whmn it may concern.-

Be it known that I, WALTER PATON, a subj ect of the Queen of Great Britain, residing at Oarlisle, in the county of Cumberland, England, have invented certain new and useful Improvements in Jacquard Mechanism for Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to harness-jacquards or shedding-motions of looms, and particularly to the two-cylinder machines for weaving cross-bordered or headed fabrics, such as carpet-squares, shawls, or fabrics with two patterns or figures or fancy goods.

The object of my invention is to produce an improved mechanism for automatically or self-actingly controlling the changing of the pattern card-cylinders at any predetermined point or points in the weaving of a fabric or at any interval of measurement of fabric wovenas, for instance, in weaving carpetsquares, shawls, or similar headed goods having a center portion and cross-borders Woven alternately throughout the piece one cylinder will be maintained in operation until the center portion,which may measure two, three, or other number of yards between the crossborders, is woven, and immediately such length is produced the cylinders will be changed and the other one maintained in operation until the width of the cross-bordered portions of adj acentsquares have been woven, this change from cylinder to cylinder being effected either after weaving given lengths of fabric, as instanced above, or alternately in any other orderat will, which avoids the employment of repeating ground cards and brings about a considerable saving in the number of cards required for weaving squares,

shawls, or figured or fancy goods.

Referring to the drawings, Figure 1 is an elevation of so much of a harness-jacquard as is essential to show the application of my improvements. Fig. 2 is an enlarged side elevation, looking in the direction of arrow A, Fig. 1, of the measuring-motion for controlling the changing of the cylinders after weaving any predetermined length of fabric. Fig. 3 is an elevation looking in the direction of arrow B,

Fig. 1, of part of the loom-frame, showing the gearing and chain-drive for rotating the measuring-motion one revolution during the weaving of any given length of fabric. and 5 are details of supplementary attachments to be called upon when the measuring mechanism is not required for controlling the changing of the cylinders, respectively, in any order at will or alternatively every pick.

The same letters of reference denote corre sponding parts throughout.

Referring to the drawings, letter a designates the framework of the jacquard; b c, the two pattern card-cylinders, arranged on the same side of the jacquard and each adapt ed as called for to act upon its respective set of jacquard-needles b c; e e, the hooked uprights or lifters; f, the lifter bars or knives, and g g the lovers for lifting the machine, each actuated by rods 9 g from the crank-shaft of the loom, the said parts being usual to crossbordering or two-cylinder machines and so far only differing from ordinary two-cylinder machines in'respect of the arrangement of the two cylinders b c on one and the same side of the machine and the construction of the'auxiliary set of needles 0', which, instead of being looped or cranked at two separate points to receive the uprights e e, as in the case of the ordinary needles I), are formed with a single extended bent-out portion 0 within one end of the' recess formed by which one of the uprights e registers on one side of the needle, while the other corresponding upright of the pair registers in the angle at the outer opposite end of the recess on the contrary side of the needle, this construction of the auxiliary needles 0 permitting of free movement of the uprights e 6 when actuated by the needles b from cylinder b without being affected thereby and being adapted to operate said uprights when the cylinder 0 is in action, these said auxiliary needles forming the subject of a previous application filed by me on November 17, l900,'Serial No. 36,831. I

Figs. 4 I

have shown my invention applied to this deli;

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a or to the beam at and which is omitted for the sake of clearness, two bell-crank cylin der-operating levers h 1', having their vertical arms coupled by links or rods 71, 73 to rods 71, 1?, attached to the cylinders b c. The horizontal arms of said bell-crank levers carry in slotted bearings at their extremities studs or rolls h i which project through respective elongated slotsjj in the usual cylinder-rod j. Centered on a stud 7r, secured to the cylinder-rod j and on which it is free to turn, is a double cylinder-lever catch or sneck k, having at its opposite extremities catches or hooked snecks 70 70 which are adapted, as hereinafter explained, to engage one at a time with the respective studs or rolls k t on the bell-crank levers h 1 One stud Z, secured to the same bracket which carries the bell-crank cylinder-operating levers h t', is mounted a four-armed or star lever'm, to the arms m m of which are attached one end of links or rods n n, whose opposite ends are secured to the double-catch lever 7r: on opposite sides of its pivot 70. To the remaining two arms m m of the four-armed lever m are secured cords or flexible connections 0 0, which are attached at their lower ends to respective drop pins or bars 19 q, supported and guided vertically in bearings in a bracket r, bolted to a convenient part of the loom-framing. These drop-pins normally rest on the peripheries of respective cams or rings o q, mounted on a shaft 8 or secured to a face-plate t on said shaft 8, and they have spiral springs 12 g surrounding same and confined between collars p g thereon and the upper part of the bracket 0", these springs being compressed when the pins rest on the longer radii or periphery ofthe cams or rings 13 q. dicating-plate and is marked off to scale radially to indicate inches and yards or other system of measurement adopted. The cams or rings 19 q are made with recesses or cutouts p q, (see Fig. 2,) ordinarily one in each cam, and the straight radial sides of said recesses or cut-outs are set to coincide with the figures or indication of measurement on the scale at which they must respectively be brought under the corresponding drop-pins for the purpose of bringing about a change of cylinder after weaving the predetermined length of fabric. Fast on the shaft 8 is a spurwheel 3', with which meshes a change-pinion 8 mounted on a stud -shaft .9 carrying a chain-wheel s. A chain u,driven by a chainwheel o, fast on the positive or cloth roller shaft 1: and guided under guide-rollers w 'w, conveys a positive motion to the chain-wheel s and through change-pinion s and spurwheel 3 to the shaft 3, whereby the'indicating-plate t and cams or rings 19' q are rotated in adegree corresponding to the motion of the positive roller, the rotation of the latter to take up a given length of fabric giving, by means of the change-pinion s employed, one complete revolution to the plate 13 and cams The face-plate t forms an inin the weaving of a predetermined length of fabric. Thus, for example, if the length of fabric'to be woven to complete a center portion and cross-bordering of a carpetsquare or shawl or a pattern or figure and ground intervening between same and the next pattern or figure or two entirely different figures or patterns should be four yards altogether, two yards for the center and two yards for the cross borders between one center portion and the next center portion, the cams will be moved to the extent of one revolution in weaving the saidfou r yards,and the recess or cut-out in cam 19 will be presented to its drop-pin p when two yards have been woven and the recess or cut-out in cam q presented to its drop-pin (1 when the remaining two yards have been woven-that is to say, the setting of the cams with respect to the scale of measurements on plate 25, which may vary to any extent within said scale, will bring about a change of cylinder after weaving any given length of fabric from five picks upward and two changes during one complete revolution of the earns 19' q namely, from the first to the second cylinder and then from the second cylinder back to the first in readiness for the next succeeding length. when the total length of fabric to be woven to include a center and crossbordering varies by increase or decrease of measurements, a change-pinion having a larger or smaller number of teeth than the pinion s is geared to the spur-wheel s, so that the cams p q shall be rotated one revolution during the taking up of the increased or reduced length of fabric by the positive roller.

The action of the mechanism described and shown in the drawings for controlling the changing of the cylinders is as follows: The cylinder-rod j is caused to move vertically up and down in the usual manner by an eccentric on the crank-shaft and carries with it the double-catch lever is, whose position determines which of the bellcrank levers h t and respective cylinders b a shall be actuated. In Fig. 1 the cylinder-rod j is shown at its highest position, with the catch-lever it moved 'over to present the upper catch or sneck k directly over the stud or roll 11, projecting through the slot 9' from bell-crank lever 2', and the lower sneck or catch 70, clear of the roll or stud hf, projecting through the slot j from the bell-crank lever h. In the next downward stroke of the cylinder-rod j the catch will engage with the stud or roll 1' and carry it down to the extent of its movement, thereby rocking the bell-crank lever '11 on its center i and drawing the cylinder 0 forward against the needles 0 to actuate same accord ing to selection of the card presented thereto by the cylinder, the stud or roll it on lever h during this movement riding freely within the limits of the slot j, so that the bell-crank lever it remains stationary in the position shown. In the upward stroke of the cylinder-rod j the roll 2' is engaged by the lower end of the slotj and the lever '6 moved back toits original position, as shown. By the time the length of fabric constituting the crossbordering or ground or alternate figure or pattern has been woven the rotation of the cam 1) has brought the recess or cut-out p under the drop-pimp, which is instantly forced down by its spring 19 into said recess until the head of the pin engages withthe bracket 1', the descent of the drop-pin 19 through the cord connection 0 turning the four-armed lever m on its center in the direction of the arrow and through links n n reversing the position of the double-catch lever 70, which now places the lower catch or sneck k into the path of the stud or roll 77; on the bellcrank lever h, whereby at each successive downstroke of the cylinder-rodj the bell-crank lever h is actuated to draw the cylinder 17 forward against the needles I) and bring a separate chain of cards into play, the successive upstrokes of rod j moving the cylinder 19 back to its outer position. One of the arms of the four-armed lever m, as the arm m, is provided with two projecting flat surfaces m m and a fiat spring m is secured to the bracket which carries the said lever and bell-crank levers 7?, 2', this spring bearing against one of said flats, according to the position into which the four-armed lever is moved, and preventing any abnormal movement thereof when turned into either of its two positions. The actuation of the cylinder 1) continues un til the length of fabric constituting the center portion of the carpet or shawl or the pattern or figure has been woven, and by the time this takes place the rotation of cam q has brought its recess or cut-out under the drop-pin g, which is instantly forced down by its spring g and through cord connection 0 draws down arm m and turns the four-armed lever on its center back into the position shown at Fig. 1 and through links a n oscillates the catch-lever to place the upper catch or sneck 70 again into position to engage the roll '5 on lever i to bring the cylinder 0 into action to weave the next cross-bordering or ground. The drop-pins p q after their descent are raised again to their normal positions by the cam-surfaces on the cams or rings 19 q, over which they ride as the cams continue to rotate. The rods 7? '5 connected to the cylinders 12 c, are surrounded at one end by spiral springs 72, i confined between collars h i secured on said rods, and the bearings 71. 2' these springs serving to keep the cylinders steady when not in action. When there are no definite lengths of fabric to be woven between each change of cylinder required, as in weaving at will either one and one or two and one or any similar order of pickssuch as in Madras, muslin, or similar figured or fancy goodsthe measuring mechanism above described is not necessary, and the cords 0 0 may therefore for the time being be disconnected at one end from the part to which attached. In lieu of said measuring mechanism I attach a rod :0, Fig. 4:, secured to one arm of a bell-crank lever 00 to the arm m of the four-armed lever on, and the other arm of the bell-crank lever 00 is secured to the harness attached to one selected pair of uprights e c, which are actuated at the proper time, according to selection of the patterncards, to bring about a change of cylinders. When the uprights are lifted, as usual, on being called for by the pattern the bellcrank lever '00 is-oscillated and through rod 00 moves the four-armed lever m on its center in the direction of the arrow, whereby through rods or links it n the position of the catch-lever 7c is reversed to place cylinder 0 out of action and bring cylinder 1) into action. On the uprights being released they are drawn down to their lowest positions by a retracting-springm secured at one end to the bell-crank lever 50 and at theopposite end to a fixed stud, the four-armed lever m then being moved back into the position shown and the cylinders changed. In weaving goods requiring every second shot to be a ground-shot the two cylinders can be brought into action alternately throughout the weaving of the fabric by connecting the two arms m m of the four-armed lever m to the lifting-levers g g, as shown at Fig. 5. The two subsidiary connections between the fourarmed lever m and a double lift of the harness or head-motion or the lifting-levers, described and shown at Figs. 4 and 5, are useful to provide for controlling the changing of the cylinders in weaving fabrics in which the measuring-motion cannot be employed to advantage, and as each can be easily connected or disconnected at will and do not encumber the machine it is advantageous that such provision should be made in two-cylinder machines having the measuring-motion applied, whereby either of the two supplementary forms of connection can be adopted to suit dilferent weaves when the measuringmotion is not of service to the class of goods to be woven.

I claim- 1. In a jacquard mechanism, the combination, with two pattern-cylinders, and separate levers and intermediate mechanism for operating them independently; of a rod for operating the said levers, a double catch for connecting the said rod with the said levers alternately, and trip mechanism operating automatically at prearranged intervals to reverse the connection of the said double catch, substantially as set forth.

2. In a jacquard mechanism, the combina-- tion, with two pattern-cylinders, andseparate levers and intermediate mechanism for operating them independently; of a rod for operating the said levers, a double catch pivoted to the said rod and connecting it with the said levers alternately, two cams and driving mechanism for revolving them continuously, two spring actuated drop-pins bearing respectively against the said two cams, and intermediate connections between the said drop-pins and the double catch Whereby the said double catch is operated-periodically, substantially as set forth.

3. In a jacquard mechanism, the combination, with two pattern-cylinders, and separate levers and intermediate mechanism for operating them independently; of a rod for operating the said levers, a double catch pivoted to the said rod and connecting it with the said levers alternately, a pivoted fourarmed lever, connections between two of the opposite arms of the four-armed lever and 'the said catch, means for holding the four- WALTER PATON.

Witnesses:

HERBERT HANSON, THOMAS H. BARRON. 

